Copper extraction from copper ore by electro-reduction in molten CaCl2-NaCl
2009 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 0019-4686, Vol. 54, no 18, 4397-4402 p.Article in journal (Refereed) Published
Sintered solid porous pellets of copper sulfide (Cu2S) and Cu2S/FeS were electrolysed at a cell voltage of 2.2-2.8 V to elemental Cu, S and Cu, Fe, S, respectively in molten CaCl2-NaCl at 800 degrees C under the protection of argon gas. The process parameters for optimal electrolysis are presented. The electrolysis products are characterized by microscopic techniques and XRD. The product characteristics are linked to the process parameters. The direct electrolysis of the sulfide to copper with the emission of elemental sulphur offers an attractive green process route for the treatment of copper ore.
Place, publisher, year, edition, pages
2009. Vol. 54, no 18, 4397-4402 p.
Copper extraction, Electro-reduction, Molten salts, Green process, SO2 emission
IdentifiersURN: urn:nbn:se:kth:diva-14118DOI: 10.1016/j.electacta.2009.03.015ISI: 000266826200019ScopusID: 2-s2.0-65549112158OAI: oai:DiVA.org:kth-14118DiVA: diva2:329908
QC 201007142010-07-142010-07-142010-07-15Bibliographically approved